build: ignore dependency updates for @material/ (angular#22004)

* build: ignore dependency updates for @material/

* Update dependabot.yml

* Update dependabot.yml

Author: andrewseguin

.github/dependabot.yml

@@ -13,3 +13,6 @@ updates:
       - "merge safe"
       - "target: patch"
     open-pull-requests-limit: 5
+    ignore:
+      - dependency-name: "@material/*"
+      - dependency-name: "material-components-web"